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This is an image of a louse egg or nit that is attached to the hair shaft ofa horse. It is a close-upimage of lice photo The microscopic eggs are easy to mistake for dandruff or residue from hair styling products. Sign up for our newsletter Thank you! The diagnosis is established by demonstration of crab-shaped lice attached to the hair shaft. Head lice can be an annoyance because their presence may cause itching and loss of sleep.

The intense itchiness can result in reduced time spent grazing, which can result in the animal becoming thin ill-thrift and unhealthy. Leave for 10 minutes, rinse and comb out nits. A Picture of a Head Louse. John Mersch, MD, FAAP Medical Editor: Debilitated animals should not be bathed in organophosphates, pyrethrins and permethrins and sheep and goats should not be allowed to consume products containing these substances.

20 Ways to Kill Head Lice

Description: Keep in mind that the American Academy of Pediatrics is against no-nit policies that exclude children from school because they have lice. The egg is rounded on both ends, indicating that it has not yet hatched out. In clinical trials, roughly three-quarters of patients were lice-free after a single application without nit combing two weeks after treatment. There are two main Orders or groupings of lice: